SNI: Add context menu

Since it uses a 13 year old library, it is broken. The popup size is
hard-fixed at 200x200, with looks really ugly with non-transparent
background.

css/style.css

@@ -3,6 +3,10 @@
   font-family: "CaskaydiaCove Nerd Font";
 }
 
+.popup {
+  color: #50fa7b;
+}
+
 .bar, tooltip {
   background-color: #282a36;
   border-radius: 16px;

css/style.scss

@@ -27,6 +27,10 @@ $textsize: 16px;
     //background-color: #00cc00
 }
 
+.popup {
+    color: #50fa7b;
+}
+
 
 .bar,tooltip{
     background-color: $bg;

meson.build

@@ -44,6 +44,7 @@ sni_watcher_header = custom_target('generate-sni-watcher-header',
                              input: ['protocols/sni-watcher.xml'],
                              output: ['sni-watcher.h'],
                              command: [dbus_gen, '--c-namespace', 'sni', '--header', '--output', '@OUTPUT@', '@INPUT@'])
+libdbusmenu = dependency('dbusmenu-gtk3-0.4')
 
 gtk = dependency('gtk+-3.0')
 gtk_layer_shell = dependency('gtk-layer-shell-0')
@@ -109,7 +110,7 @@ libgBar = library('gBar',
    'src/Log.cpp',
    'src/SNI.cpp',
   ],
-  dependencies: [gtk, gtk_layer_shell, pulse, wayland_client],
+  dependencies: [gtk, gtk_layer_shell, pulse, wayland_client, libdbusmenu],
   include_directories: stb,
   install: true)
 

src/SNI.cpp

@@ -5,6 +5,7 @@
 #include <sni-watcher.h>
 #include <sni-item.h>
 #include <gio/gio.h>
+#include <libdbusmenu-gtk/menu.h>
 
 #define STB_IMAGE_IMPLEMENTATION
 #include <stb/stb_image.h>
@@ -28,6 +29,10 @@ namespace SNI
         uint8_t* iconData = nullptr;
 
         std::string tooltip;
+
+        std::string menuObjectPath;
+
+        EventBox* gtkEvent;
     };
     std::vector<Item> items;
 
@@ -182,6 +187,22 @@ namespace SNI
             g_variant_unref(tooltipVar);
         }
 
+        // Query menu
+        GVariant* menuPath = getProperty("Menu");
+        if (menuPath)
+        {
+            GVariant* menuVariant;
+            g_variant_get_child(menuPath, 0, "v", &menuVariant);
+            const char* objectPath;
+            g_variant_get(menuVariant, "o", &objectPath);
+            LOG("SNI: Menu object path: " << objectPath);
+
+            item.menuObjectPath = objectPath;
+
+            g_variant_unref(menuVariant);
+            g_variant_unref(menuPath);
+        }
+
         return item;
     }
 
@@ -266,11 +287,36 @@ namespace SNI
         {
             if (item.iconData)
             {
+                auto eventBox = Widget::Create<EventBox>();
+                item.gtkEvent = eventBox.get();
+
+                eventBox->SetOnCreate(
+                    [&](Widget& w)
+                    {
+                        auto clickFn = [](GtkWidget*, GdkEventButton* event, void* data) -> gboolean
+                        {
+                            if (event->button == 1)
+                            {
+                                Item* item = (Item*)data;
+
+                                GtkMenu* menu = (GtkMenu*)dbusmenu_gtkmenu_new(item->name.data(), item->menuObjectPath.data());
+                                LOG(menu);
+                                gtk_menu_attach_to_widget(menu, item->gtkEvent->Get(), nullptr);
+                                gtk_menu_popup_at_pointer(menu, (GdkEvent*)event);
+                                LOG(item->menuObjectPath << " click");
+                            }
+                            return GDK_EVENT_STOP;
+                        };
+                        g_signal_connect(w.Get(), "button-release-event", G_CALLBACK(+clickFn), &item);
+                    });
+
                 auto texture = Widget::Create<Texture>();
                 texture->SetHorizontalTransform({0, true, Alignment::Fill});
                 texture->SetBuf(item.w, item.h, item.iconData);
                 texture->SetTooltip(item.tooltip);
-                iconBox->AddChild(std::move(texture));
+
+                eventBox->AddChild(std::move(texture));
+                iconBox->AddChild(std::move(eventBox));
             }
         }
         parentBox->AddChild(std::move(container));

src/Widget.cpp

@@ -173,6 +173,9 @@ void Widget::ApplyPropertiesToWidget()
     gtk_widget_set_valign(m_Widget, Utils::ToGtkAlign(m_VerticalTransform.alignment));
     gtk_widget_set_hexpand(m_Widget, m_HorizontalTransform.expand);
     gtk_widget_set_vexpand(m_Widget, m_VerticalTransform.expand);
+
+    if (m_OnCreate)
+        m_OnCreate(*this);
 }
 
 void Box::SetOrientation(Orientation orientation)

src/Widget.h

@@ -157,6 +157,8 @@ public:
 
     void SetVisible(bool visible);
 
+    void SetOnCreate(Callback<Widget>&& onCreate) { m_OnCreate = onCreate; }
+
 protected:
     void PropagateToParent(GdkEvent* event);
     void ApplyPropertiesToWidget();
@@ -169,6 +171,8 @@ protected:
     std::string m_Tooltip;
     Transform m_HorizontalTransform; // X
     Transform m_VerticalTransform;   // Y
+
+    Callback<Widget> m_OnCreate;
 };
 
 class Box : public Widget